Tengal, D.S.K. 2017. Ductility Index For Class F Fly Ash Based Reinforced Geopolymer Concrete Beams. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE. 3, 1 Special issue (Aug. 2017), 299–307.